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Define Boyce codd normal form A relation schema R is in BCNF with respect to a set F of functional dependencies if, for all functional dependencies in F + of the form.α ->β.
State The position of object at any moment is called state. An object can have many states depend upon time. After receiving some input instructions, the object can change its
How many types of Views are there? There are Four types of views:- Database View Help View Projection View Maintenance View
How does a query tree represent a relational algebra expression? Discuss any three rules for query optimisation, giving example as to when should each rule be applied. Ans
design a generalization specialization hierarchy for a motor vehicle sales company. the company sells motorcycles, passenger cars, vens and buses.
please describe the data base management with the easy example &give the application?
Explain what is RDBMS ? RDBMS - RDBMS is a database management system (DBMS) which stores data within the form of relations. Relational databases are powerful since they need f
What is the way a particular application views the data from the database that the application uses? Sub schema is the way a particular application views the data from the data
Question: (a) e-Government implementations normally evolve through a multi-stage process. Describe, using appropriate examples, the stages involved in an e-Government implemen
Benefits of using heuristics
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